<p>Here is a Level 4 SAT problem where the block is a bit harder to recognize:</p>
<p>If x=7[(a+b+c+d+e)/5], then in terms of x, what is the average (arithmetic mean) of a, b, c, d, and e?</p>
<p>(A) x/35
(B) x/7
(C) x/5
(D) 5x
(E) 7x</p>
<p>What is the block here? Note that once you recognize the block you can get the answer in just a few seconds.</p>